*{
    margin: 0;
    padding: 0;
    box-sizing: border-box;
}
body {
    height: 100vh;
    background-color: #1d1c1c;
    display: flex;
}
.content {
    margin: auto;
    color: #ffffff;
    font-size: 70px;
    font-weight: bolder;
    position: relative;
}
.content::before {
    content: "HTML CSS  JAVASCRIPT";
    color: #06ee99;
    position: absolute;
    white-space: nowrap;
    overflow: hidden;
    width: 51px;
    border-right: 5px solid #06ee99;
    animation: animate 8s linear infinite;
    filter: drop-shadow(0 0 50px #06ee99);
}
@keyframes animate {
    0%{
        width: 0;
    }
    100%{
        width: 100%;
    }
}